The temporal and spatial variations of low frequency geomagnetic pulsations at polar cusp and cap latitudes

• Published in: Annals of Geophysics
• Main Authors: Kleimenova, N. G., Francia, P., Villante, U., Kozyreva, O. V., Bitterly, J., Schott, J. J.
• Format: Article in Journal/Newspaper
• Language: English
• Published: Istituto Nazionale di Geofisica e Vulcanologia, INGV 1999
• Subjects: Geomagnetic pulsations; Antartica; 04.05.02. Geomagnetic field variations and reversals; Antarctic; Antarc*; antartic*
• Online Access: https://www.annalsofgeophysics.eu/index.php/annals/article/view/3747; https://doi.org/10.4401/ag-3747

Geomagnetic field measurements at two Antarctic stations are compared during two weeks in the local summer (January 1-15, 1992). Low frequency (0.6-6 mHz) pulsations are observed at each station near local magnetic noon. The same wave packets appear in some cases also at the other station, although with a significant attenuation, more clearly in the morning sector; the waves show a near noon reversal of the polarization sense from counter-clockwise in the morning to clockwise in the afternoon indicating a westward and an eastward propagation, respectively.